* {
    padding: 0;
    margin: 0;
}

body {
    background-color: rgba(0, 0, 0, 0.616);
}

h1,
.btnBagc {
    -moz-user-select: none;
    /* Firefox私有属性 */
    -webkit-user-select: none;
    /* WebKit内核私有属性 */
    -ms-user-select: none;
    /* IE私有属性(IE10及以后) */
    -khtml-user-select: none;
    /* KHTML内核私有属性 */
    -o-user-select: none;
    /* Opera私有属性 */
    user-select: none;
    /* CSS3属性 */
}

.textmessage {
    margin: 40px 0 20px;
    box-sizing: border-box;
    border-bottom: 1px solid #5cb85cc2;
}

.textmessage h1 {
    font-size: 3em;
}

.textmessage small {
    font-size: 15px;
    margin-left: 15px;
    color: rgba(255, 255, 255, 0.685);
}

.textmessage .btnBagc {
    margin: 2px 0 12px;
    outline: none;
    border-color: #5cb85c;
    background-color: #5cb85c;
}

.textmessage .btnBagc:active {
    background-color: #5cb85cc2;
    border-color: #5cb85cc2;
}